colinneagle writes "Open Source guy Bryan Lunduke has experienced the difficulties of migrating a successful closed source project to an open license first-hand, but still believes — or at least wants to believe — that it can be done. He writes: 'Occasionally, someone makes a go of it, to take a good piece of closed source software and release the source code under a nice, open license. In fact, I did just that about a year ago. I tried to take a software development tool (along with some video games) that I had developed (and was earning a good living from) and migrate them to the GPL with continued development funded via donations. The results were...disastrous. Within a very short period of time of going Open Source, the total funding for the projects fell to less than 20% of what was being brought in via sales when the software was Closed Source, which almost completely impeded the ability to fund continued development. Luckily, I was able to recover and get things back on track, but it was definitely not a fun experience.'"
How viable is migrating a closed source project to something open?